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CA2210922A1 - Method and apparatus for tracking alignment in wireless optical communications - Google Patents

Method and apparatus for tracking alignment in wireless optical communications

Info

Publication number
CA2210922A1
CA2210922A1 CA002210922A CA2210922A CA2210922A1 CA 2210922 A1 CA2210922 A1 CA 2210922A1 CA 002210922 A CA002210922 A CA 002210922A CA 2210922 A CA2210922 A CA 2210922A CA 2210922 A1 CA2210922 A1 CA 2210922A1
Authority
CA
Canada
Prior art keywords
alignment
optical communications
wireless optical
communication system
accuracy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002210922A
Other languages
French (fr)
Other versions
CA2210922C (en
Inventor
Kevin Alan Shelby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of CA2210922A1 publication Critical patent/CA2210922A1/en
Application granted granted Critical
Publication of CA2210922C publication Critical patent/CA2210922C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

An optical communication system and methods are disclosed wherein the receiving source uses an array sensor to recover data from a transmitted optical beam and to evaluate alignment accuracy with the transmitted beam. The array sensor uses the principles of geometric invariance to determine the accuracy of alignment. The sensor may relay the recovered information to a system controller or other suitable device, which can then reposition the receiver so that it is properly aligned with the transmitter. The system and methods advantageously provide for a more compact and robust communication system wherein a single receiving element can be used for both data recovery and alignment evaluation functions.
CA002210922A 1997-01-30 1997-07-21 Method and apparatus for tracking alignment in wireless optical communications Expired - Fee Related CA2210922C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/791,279 US5953146A (en) 1997-01-30 1997-01-30 Method and apparatus for tracking alignment in wireless optical communications
US791,279 1997-01-30

Publications (2)

Publication Number Publication Date
CA2210922A1 true CA2210922A1 (en) 1998-07-30
CA2210922C CA2210922C (en) 2001-03-27

Family

ID=25153209

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002210922A Expired - Fee Related CA2210922C (en) 1997-01-30 1997-07-21 Method and apparatus for tracking alignment in wireless optical communications

Country Status (5)

Country Link
US (1) US5953146A (en)
EP (1) EP0856958A3 (en)
JP (1) JP3753858B2 (en)
CN (1) CN1191427A (en)
CA (1) CA2210922C (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002511204A (en) 1997-02-11 2002-04-09 クワンタムビーム リミテッド Signaling system
US6522440B1 (en) * 1999-04-28 2003-02-18 Trw Inc. Inter-satellite optical link track sensor
US6469815B1 (en) * 1999-04-28 2002-10-22 Trw Inc. Inter-satellite optical link acquisition sensor
US6509992B1 (en) * 1999-09-09 2003-01-21 Nortel Networks Corporation Free space optical interconnect system tolerant to misalignments and method of operation thereof
EP1386425A4 (en) * 2001-04-20 2007-11-07 Texas Instruments Inc Method and apparatus for re-acquisition after link disruption in an optical wireless link
AU2002254676A1 (en) * 2001-04-20 2002-11-05 Texas Instruments Incorporated Method and apparatus for aligning optical wireless links
US6510401B2 (en) 2001-05-11 2003-01-21 The United States Of America As Represented By The Director Of The National Security Agency Method of authenticating beacon
US20030035178A1 (en) * 2001-08-17 2003-02-20 George Seaver Solid-state system for tracking and regulating optical beams
US20030067657A1 (en) * 2001-09-07 2003-04-10 Dimmler Wolfgang M. Method and apparatus to compensate for atmospheric effects and target motion in laser communication system
JP3918813B2 (en) * 2001-10-23 2007-05-23 ソニー株式会社 Data communication system, data transmission device, and data reception device
US7389052B2 (en) * 2002-01-30 2008-06-17 Texas Instruments Incorporated Calibration method for station orientation
ITMI20021938A1 (en) * 2002-09-12 2004-03-13 Cit Alcatel RECEIVER FOR OPTICAL AIR TRANSMISSION SYSTEM ABLE TO ASSESS THE CAUSES OF ANY DECREASE OF POWER RECEIVED
US7643755B2 (en) * 2003-10-13 2010-01-05 Noble Peak Vision Corp. Optical receiver comprising a receiver photodetector integrated with an imaging array
US7813590B2 (en) * 2005-05-13 2010-10-12 Given Imaging Ltd. System and method for displaying an in-vivo image stream
US20070160373A1 (en) * 2005-12-22 2007-07-12 Palo Alto Research Center Incorporated Distributed illumination and sensing system
US7711441B2 (en) * 2007-05-03 2010-05-04 The Boeing Company Aiming feedback control for multiple energy beams
KR101307610B1 (en) * 2007-08-10 2013-09-12 삼성전자주식회사 Method and apparatus for processing signals of photodetector in visible light communication
KR20090047615A (en) * 2007-11-08 2009-05-13 삼성전자주식회사 Method and apparatus for receiving visible light signal in visible light communication system
FR2936893B1 (en) * 2008-10-06 2010-11-19 Astrium Sas OPTICAL TRANSMIT RECEIVING ASSEMBLY WITH CONTROL OF TRANSMISSION DIRECTION
US20100266290A1 (en) * 2009-04-15 2010-10-21 Honeywell International Inc. Laser communication positioning system
CN105359436A (en) * 2013-05-07 2016-02-24 上犹稔 Lightwave communication purpose reception apparatus, lightwave communication apparatus, and lightwave communication method
US9800332B2 (en) * 2013-12-27 2017-10-24 Space Photonics, Inc. Acquisition, tracking, and pointing apparatus for free space optical communications with moving focal plane array
JP6778205B2 (en) 2014-11-10 2020-10-28 バルブ コーポレーション Location tracking system and method
ES2866902T3 (en) * 2016-06-13 2021-10-20 Bae Systems Plc Free Space Optical Communication System Receiver
CN109361457A (en) * 2018-11-08 2019-02-19 京东方科技集团股份有限公司 Signal receiving/transmission device and implementation method based on visible light communication, system
US11521063B1 (en) * 2019-12-17 2022-12-06 Bae Systems Information And Electronic Systems Integration Inc. System and method for terminal acquisition with a neural network
US11424827B1 (en) * 2021-03-17 2022-08-23 Amazon Technologies, Inc. Optical tracking system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491982A (en) * 1982-07-16 1985-01-01 At&T Bell Laboratories Terrestrial light beam communication system
GB8710038D0 (en) * 1987-04-28 1987-06-03 British Aerospace Optical apparatus
US5343287A (en) * 1993-04-05 1994-08-30 The United States Of America As Represented By The Secretary Of The Air Force Integrated atmospheric transverse coherence length/laser radiation angle-of-arrival measurement system
JP3672202B2 (en) * 1993-09-08 2005-07-20 シャープ株式会社 Spatial light transmission apparatus and spatial light transmission method
JP3302141B2 (en) * 1993-11-16 2002-07-15 キヤノン株式会社 Optical space communication method
US5517016A (en) * 1994-03-31 1996-05-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Lasercom system architecture with reduced complexity
JPH07303290A (en) * 1994-05-02 1995-11-14 Wacom Co Ltd Information input device
JP3473988B2 (en) * 1994-05-20 2003-12-08 株式会社ワコム Information input device
US5532860A (en) * 1995-03-20 1996-07-02 General Electric Company Spatial synchronization for optical communication system
EP0739039A3 (en) * 1995-04-18 1998-03-04 Interuniversitair Micro-Elektronica Centrum Vzw Pixel structure, image sensor using such pixel, structure and corresponding peripheric circuitry
US5773808A (en) * 1996-05-17 1998-06-30 Laser; Vadim Method and apparatus for reading invisible messages

Also Published As

Publication number Publication date
CN1191427A (en) 1998-08-26
JPH10224303A (en) 1998-08-21
CA2210922C (en) 2001-03-27
EP0856958A2 (en) 1998-08-05
JP3753858B2 (en) 2006-03-08
MX9800763A (en) 1998-10-31
EP0856958A3 (en) 1999-09-01
US5953146A (en) 1999-09-14

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